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40KMC------310/ 40KMQ------310
GB - 8
Troubleshooting
No Room controller LCD display:
• Mis-wiring of the 12 volt power to Room Controller control;
verify that + 12 V and Ground are connected to the proper
terrminals of the Controller (Reference Installation wiring
section for correct connections): after disconnecting the
power, correct the wiring problem and re-cycle power.
• Power not online; check that the units main power is
connected.
The main control board should be operating normally: after
verifing the wiring to the Room Controller, re-cycle the unit
power.
• No 12 volts between P and G of terminal block; check the
installation of the J6 plug on the main control board: after
disconnecting the power, correct the wiring problem and
re-cycle power.
Note
: Those verifications need to be carried out by qualified
personnel only.
+12 volts applied to Room Controller at the correct terminals
and still does not operate:
• The Room Controller is damaged; change the Room
Controller and re-cycle power.
Note
: This operation needs to be carried out by qualified
personnel only.
Air conditioner will not start:
• The main switch is switched OFF, place the switch in the ON
position.
• The fuses on the main switch are burnt out; replace the fuses.
( this operation need to be carried out by qualified personnel only).
• Wait for 3 minutes: protection against frequent compressor
cycling is ON.
• Selected temperature is higher than the room temperature (or
lower in the heating mode).
Air conditioner is not supplying enough cooling (or heating):
• Air cannot circulate freely.
• Dirty filter reduces air quantity circulating.
Filter must be cleaned by skilled personnel only.
• Doors and/or windows are open.
• Fan speed has been set to ‘low’.
• Air flow direction is not correct for optimum ventilation.
• Selected temperature is not correct.
A slight mist is emitted from the unit:
• A slight mist, coming out of the unit air outlet, is sometimes
noticed during cooling operation. This is due to the cool air
coming into contact with the room air.
A slight whistling noise is heard when the air conditioner
starts or stops:
• This is due to the refrigerant beginning to circulate or an
adjustment of the refrigerant pressures. This is a normal
operating condition.
P (Green LED) indicator is flashing:
System malfunction.
Contact service organisation after having ensured that:
• Air circulation is not obstructed.
• Outdoor unit coil is not obstructed and causing severe reduction
of air circulation.
• Condensate drainage tube is not obstructed.
As regards fault codes to be communicated to the after-sales
service, please refer to the installation instructions.
Restart air conditioner after having corrected the faults.
Q (Red LED) indicator is illuminated:
• In the heating mode, the LED switches on to indicate an active
defrost condition.
The unit emits unpleasant smells:
• Unpleasant smells can accumulate on the air filters and then be
dispersed into the room during air conditioner operation.
Switch the unit OFF and contact an authorised service centre to
have the filters cleaned.
Restart unit in the ventilation (fan only) mode and open windows
to change room air.
The unit makes strange noises:
• Occasionally the unit makes strange noises at start-up, during
operation or when it has stopped.
These are generally due to the effect of temperature changes on
the plastic parts.
Mist or Vapor Cloud emitted at start-up of Heating operation:
• A mist or cloud of vapor may be emitted from the unit, when
switching from a cooling operation to a reverse cycle heating
operation. This will occur when the unit has been operating in
cooling mode for awhile and then is switched to heating. The
combination of the evaporated indoor coil condensate and the dry
room air, may result in a cloud of vapor being emitted from the
unit. There is no need for concern.
WARNING:
(models with electric heaters):
• If the manual reset, thermal trip device cuts out, switch the unit
OFF and ON again at the main switch to reset.
If the malfunction persists, contact your local authorised dealer.